/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 123
 * Date: 2023-05-26
 * Time: 21:32
 */
class MyStack {

    public MyStack() {

    }

    public void push(int x) {

    }

    public int pop() {

    }

    public int top() {

    }

    public boolean empty() {

    }
}
